C Tutorial
In c program, lets draw the box using for loop with symbol '#'.
#include<tdio.h> main() { int count=0, rows=10; printf("Enter number of rows: "); scanf("%d", &rows); //Top Line printf("\n#############################"); for(count=1;count<=rows;count++) { //Left and Right Lines printf("\n# #"); } //Bottom line printf("\n##############################"); }
Output:
$ gcc for_loop_draw_box.c for_loop_draw_box.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int] main() ^~~~ $ ./a.out Enter number of rows: 15 ############################# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ############################## $ ./a.out Enter number of rows: 12 ############################# # # # # # # # # # # # # # # # # # # # # # # # # ##############################
Lets use * instead of # symbol,
#include<stdio.h> main() { int count=0, rows=10; printf("Enter number of rows: "); scanf("%d", &rows); printf("\n***********************"); for(count=1;count<=rows;count++) { printf("\n* *"); } printf("\n************************"); }
Output:
$ gcc for_loop_draw_box.c for_loop_draw_box.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int] main() ^~~~ $ ./a.out Enter number of rows: 12 *********************** * * * * * * * * * * * * * * * * * * * * * * * * ************************
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