{"id":11789,"date":"2022-09-28T14:24:11","date_gmt":"2022-09-28T08:54:11","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-compare-2-strings-in-c-and-print-equal-part-closed\/"},"modified":"2022-09-28T14:24:11","modified_gmt":"2022-09-28T08:54:11","slug":"solved-compare-2-strings-in-c-and-print-equal-part-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-compare-2-strings-in-c-and-print-equal-part-closed\/","title":{"rendered":"[Solved] Compare 2 strings in C and print equal part [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-41091585\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"41091585\" data-parentid=\"41091174\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Please look if this program can help you. It takes the two strings as arguments from the command line. <\/p>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;string.h&gt;\n\nint *substring(char *s, char *t) {\n    int strlen1 = strlen(s);\n    int strlen2 = strlen(t);\n    int len = strlen1 &lt; strlen2 ? strlen1 : strlen2;\n    int i, j, k;\n    int longest = 0;\n    int **ptr = (int **) malloc(2 * sizeof(int *));\n    static int *ret;\n    ret = (int *) calloc(strlen1 + 1, sizeof(int));\n    for (i = 0; i &lt; 2; i++)\n        ptr[i] = (int *) calloc(strlen2, sizeof(int));\n\n    k = 0;\n    for (i = 0; i &lt; strlen1; i++) {\n        memcpy(ptr[0], ptr[1], strlen2 * sizeof(int));\n        for (j = 0; j &lt; strlen2; j++) {\n            if (s[i] == t[j]) {\n                if (i == 0 || j == 0) {\n                    ptr[1][j] = 1;\n                } else {\n                    ptr[1][j] = ptr[0][j - 1] + 1;\n                }\n                if (ptr[1][j] &gt; longest) {\n                    longest = ptr[1][j];\n                    k = 0;\n                    ret[k++] = longest;\n                }\n                if (ptr[1][j] == longest) {\n                    ret[k++] = i;\n                    ret[k] = -1;\n                }\n            } else {\n                ptr[1][j] = 0;\n            }\n        }\n    }\n    for (i = 0; i &lt; 2; i++)\n        free(ptr[i]);\n    free(ptr);\n    ret[0] = longest;\n    return ret;\n}\n\nint main(int argc, char *argv[]) {\n    int i, longest, *ret;\n\n    if (argc != 3) {\n        printf(\"usage: longest-common-substring string1 string2\\n\");\n        exit(1);\n    }\n\n    ret = substring(argv[1], argv[2]);\n    if ((longest = ret[0]) == 0) {\n        printf(\"There is no common substring\\n\");\n        exit(2);\n    }\n\n    i = 0;\n    while (ret[++i] != -1) {\n        printf(\"%.*s\\n\", longest, &amp;argv[1][ret[i] - longest + 1]);\n    }\n\n    exit(0);\n}\n<\/code><\/pre>\n<p>Test<\/p>\n<pre><code>.\/a.out ABCDEFGHIJKLMNOP QWERABCDZXVBERTY\nABCD\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Compare 2 strings in C and print equal part [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Please look if this program can help you. It takes the two strings as arguments from the command line. #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; int *substring(char *s, char *t) { int strlen1 = strlen(s); int strlen2 = strlen(t); int len = strlen1 &lt; strlen2 ? strlen1 : strlen2; int i, j, k; int &#8230; <a title=\"[Solved] Compare 2 strings in C and print equal part [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-compare-2-strings-in-c-and-print-equal-part-closed\/\" aria-label=\"More on [Solved] Compare 2 strings in C and print equal part [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,362],"class_list":["post-11789","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-string"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Compare 2 strings in C and print equal part [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-compare-2-strings-in-c-and-print-equal-part-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Compare 2 strings in C and print equal part [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Please look if this program can help you. It takes the two strings as arguments from the command line. #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; int *substring(char *s, char *t) { int strlen1 = strlen(s); int strlen2 = strlen(t); int len = strlen1 &lt; strlen2 ? strlen1 : strlen2; int i, j, k; int ... 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It takes the two strings as arguments from the command line. #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; int *substring(char *s, char *t) { int strlen1 = strlen(s); int strlen2 = strlen(t); int len = strlen1 &lt; strlen2 ? strlen1 : strlen2; int i, j, k; int ... 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