View Compilation Error

0_0_38425395_28315.c: In function 'main':
0_0_38425395_28315.c:48:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i = 0; i < cnt; i++){
     ^
0_0_38425395_28315.c:48:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_38425395_28315.c:50:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int j = 0; j < n; j++){
         ^
0_0_38425395_28315.c:54:17: error: redefinition of 'j'
         for(int j = 0; j < m; j++){
                 ^
0_0_38425395_28315.c:50:17: note: previous definition of 'j' was here
         for(int j = 0; j < n; j++){
                 ^
0_0_38425395_28315.c:54:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int j = 0; j < m; j++){
         ^